Databases and models for efficiency expert evaluation of steel production with ferro-alloys - D. N. Togobitskaja; V. P. Piptjuk; A. F. Petrov; S. V. Grekov; I. R. Snigura; Ju. M. Likhachev; L. A. Golovko (Fundamental and applied problems of ferrous metallurgy, 2017)